Objetivo
This proposal encompasses the use of an innovative transducer cluster, physical modelling techniques for the simulation of flow and FE analysis to define the basic criteria for determining the force contour on the die-cavity; this will lead, with further development to a die-design support system.
The aim of this work was to propose, develop and test a new approach to the design of tools for nett-forming. The procedure was intended to be entirely off-line to be able to eliminate industrial trials and produce the tools 'right first time'. Thus, everything was to be decided at the design stage. The concept was based on two off-line activities - Physical Modelling experiments and Finite Element simulations.
As a result of this work a new transducer was invented. The concept of new transducer was based on a set of piezoceramic plates which were subjected to shear. Surface stress data from a cluster of such transducers were acquired through a multichannel system for further processing. This involved, scaling of the measured stresses up to the level expected from the real processes. Accuracy of this scaling depended on the appropriate modelling materials and lubricants.
The new capability of PM to measure the surface stress in the die-cavity, in the course of the modelling process, enabled evaluation of the real stress distribution. Information about that load helps to avoid tool overloading and to reduce tool wear. This research involved the measurement of load distribution to serve as the boundary condition for further FE calculations.
The methodology of FE calculations for tool compensation was established. It was based on two elastic analyses, one referring to the tool and another one referring to the component. The same load distribution, imported from PM, was applied to both bodies. After superimposing the results of tool deflection and component springback, one could obtain the resulting component form.
Because of elastic effects, the resulting component shape does not conform to the nominal shape. To compare both forms and derive a proper geometry of the tool, a special CAD-based application software was developed. Due to its versatility it can serve as a shell for the ultimate die compensation system.
The results of validation trials confirmed feasibility of the proposed approach. It is possible, using PM and FE techniques, to predict the real component form and thus design tools which negate elastic effects. It is clear that the technique proposed has a great potential in terms of saving time and expense.
Further development of this technique will be concerned with including secondary yielding due to contracting die and temperature related geometry changes in cold metal forming. This fundamental research will be accompanied by building a user friendly tool compensation system in the form of a commercial software package.
The elastic deflection of the die-cavity metal-deformation processes detracts the product shape from the expected form. Industries such as the automotive aero-engine, hydraulic, mechatronics and consumer goods, accommodate this deflection by using information extruded form production trials. The basic criteria for enabling die-designers to completely negate the effects of die-cavity elasticity at the design stage have, as yet, not been defined.
The required die-cavity form can be developed either through production trials or by using Finite Element (FE) analysis. Production trials are expensive and current FE analysis based on an assumed force contour is deficient; a major advance in the design of die-cavities for nett-forming will be achieved it the Finite Element Analysis was initiated with a precise description of the force contour on the die-cavity during forming.
Research which defines the basic criteria for the description of the force contour will enable the subsequent development of a die-design support system which will enable die-manufacture without the need for production trials.
Ámbito científico (EuroSciVoc)
CORDIS clasifica los proyectos con EuroSciVoc, una taxonomía plurilingüe de ámbitos científicos, mediante un proceso semiautomático basado en técnicas de procesamiento del lenguaje natural. Véas: El vocabulario científico europeo..
CORDIS clasifica los proyectos con EuroSciVoc, una taxonomía plurilingüe de ámbitos científicos, mediante un proceso semiautomático basado en técnicas de procesamiento del lenguaje natural. Véas: El vocabulario científico europeo..
- ingeniería y tecnología ingeniería mecánica tribología lubricación
- ingeniería y tecnología ingeniería mecánica mecatrónica
- ciencias naturales matemáticas matemáticas puras geometría
- ciencias naturales informática y ciencias de la información software software de aplicación
Para utilizar esta función, debe iniciar sesión o registrarse
Programa(s)
Programas de financiación plurianuales que definen las prioridades de la UE en materia de investigación e innovación.
Programas de financiación plurianuales que definen las prioridades de la UE en materia de investigación e innovación.
Tema(s)
Las convocatorias de propuestas se dividen en temas. Un tema define una materia o área específica para la que los solicitantes pueden presentar propuestas. La descripción de un tema comprende su alcance específico y la repercusión prevista del proyecto financiado.
Datos no disponibles
Las convocatorias de propuestas se dividen en temas. Un tema define una materia o área específica para la que los solicitantes pueden presentar propuestas. La descripción de un tema comprende su alcance específico y la repercusión prevista del proyecto financiado.
Convocatoria de propuestas
Procedimiento para invitar a los solicitantes a presentar propuestas de proyectos con el objetivo de obtener financiación de la UE.
Datos no disponibles
Procedimiento para invitar a los solicitantes a presentar propuestas de proyectos con el objetivo de obtener financiación de la UE.
Régimen de financiación
Régimen de financiación (o «Tipo de acción») dentro de un programa con características comunes. Especifica: el alcance de lo que se financia; el porcentaje de reembolso; los criterios específicos de evaluación para optar a la financiación; y el uso de formas simplificadas de costes como los importes a tanto alzado.
Régimen de financiación (o «Tipo de acción») dentro de un programa con características comunes. Especifica: el alcance de lo que se financia; el porcentaje de reembolso; los criterios específicos de evaluación para optar a la financiación; y el uso de formas simplificadas de costes como los importes a tanto alzado.
Datos no disponibles
Coordinador
2800 LYNGBY
Dinamarca
Los costes totales en que ha incurrido esta organización para participar en el proyecto, incluidos los costes directos e indirectos. Este importe es un subconjunto del presupuesto total del proyecto.